含锰废渣的氧化—活化再生回用工艺-.研究

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1、硕fj学位论义醇：Mn02(m／m)=1：4，反应时间为4h，反应温度为85℃。关键词：紫苏醛；含锰废渣；氯酸钠；高锰酸钾；活性二氧化锰；循环利用IIl～—————————————●_____________——_-————__________————__————●_____————————__-———————————————————————————一AbstractAlargeamountofwastesolidofmanganeseoxides，whosemajorconponentsareMn02thathasnotbeenconsumeredandlow—valencemang

2、aneseoxidesofwhichMnOisdominant，isgeneratedinthesynthesisofperillaldehydewhenMn02isofrenusedasanoxidant．Currently，mostofthedomesticmanufacturersdealthewastesolidofmanganeseoxidesashazardousindustrialwasteresidue，suchaslandfill，pileanddumpingdirectly，whichhavecausedtremendouspressureontheenvironm

3、ent．Inthispaper,wastesolidofmanganeseoxidesproducedinthesynthesisofperillaldehydeataperfumerycompanyinHunan，WasusedasoriginalmaterialtoprepareactivatedMn02，thenactivatedMn02couldbereusedinoxidizingperillaalcoholtoproduceperillaldehyde，thereby,recyclingofMn02intheprocessofperillajdehydeproduction

4、canbeachieved．Firstly，thecontentofMn02andMnOinwastesolidofmanganeseoxidesWasanalyzedinthispaper,itobtainedthatMn02occupiesabout49．68％ofthewastesolid，whileMnOisabout41．72％．Secondly,theoptimummethodofpreparingMn02wasstudied，inthefirstplace，fivemethodsasacidwashing，MnC03pyrogenation，H202oxidation，N

5、aCl03oxidation，KMn04oxidation，weresinglyusedtoproduceMnOz，thentwocomplexmethodsasNaCl01oxidation&acidwashingandNaCl03oxidation&KMn04oxidationweretakenfurthertoprepareMn02．ThroughcomparingtheproductivityandoxidizingcapabilityoftheMn02，theeconomicalefficiencyofthosemethod，theoptimummethodofprepari

6、ngMn02thatNaCl03oxidation&KMn04oxidationwasobtained．ThebestconditionsofproducinginitialMn02，studiedintheprocessofrecyclingandproducingMn02，wereobtainedbyusingsinglefactorexperimentsandorthogonalexperiments，theresultsshowedas：reactiontimeisabout5h，reactiontemperatureis85。C，NaCl03dosageis130％ofthe

7、oreticaldosage，andthemolarconcentrationofH2S04is1．5mol／L．Inthepurifying&activateprocessofinitialMn02withKMn04，itWasdiscoveredthatactivatingspeedcanbeacceleratedandreactiontimecanbeshortenedbyraisingreactiontemperature，butith